WHISTLING NOISE COMING FROM FRESH AIR INLET (ENGINE COMPARTMENT): A whistling noise is present from the...
BMW technical service bulletin B640121 for 2018-2021 BMW X3 and 2019-2021 BMW X4.
- Bulletin number
- B640121
- Component
- Equipment
- Summary
- WHISTLING NOISE COMING FROM FRESH AIR INLET (ENGINE COMPARTMENT): A whistling noise is present from the fresh air inlet area (engine compartment bulkhead area), in the right front area of the vehicle, at speeds above 40 mph.
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